Building blocks

## Interactive graph

1. If, at time $t = 0$, the velocity and displacement are zero, can you describe, draw or imagine what the journey is like?

Which direction are you travelling in? Are you speeding up or slowing down?

1. Approximately, for what value of $c$ is there no negative velocity?

• What feature of the journey changes when there is no negative velocity?

• What feature of the displacement graph changes when there is no negative velocity?

2. The acceleration function is negative for the first $4$ seconds. What does this mean is happening to the object when,

• $c = 0$?
• $c = 3$?
• $c = 2$?
3. Now let’s think about $c=0$ and $d=2$. How would you describe the journey, and how does it differ from the journey in question 1?